Can the minidp interface reach 144Hz?

The Mini DP interface can achieve a refresh rate of 144Hz. The detailed analysis is as follows:

Based on the DP 1.4 specification: When the Mini DP interface complies with the DP 1.4 standard, it can support a 144Hz refresh rate for both 1080p resolution and 4K resolution outputs. This performance is determined by the interface's bandwidth and protocol specifications. The bandwidth of DP 1.4 is sufficient to meet the combined requirements of high refresh rate and high resolution.

Compatibility with DP 1.0 version: Even if the device uses an older DP 1.0 version, it theoretically can support a 1080p 144Hz output. However, it should be noted that the bandwidth of DP 1.0 is lower, and the actual transmission rate will significantly decrease, potentially affecting the smoothness or stability of the picture, especially when transmitting complex images, it may cause lag.

The relationship between Mini DP and standard DP interface: Mini DP is a physical form variant of the DP interface, with the same function as the standard DP interface, only with a smaller interface size. Therefore, its refresh rate support capability is the same as that of the standard DP interface, which is determined by the DP protocol version followed.

Distinguishing from Thunderbolt 2 interface: The Mini DP interface is similar in appearance to the Thunderbolt 2 interface, but the functions are different. Although the Thunderbolt 2 interface is based on the physical design of Mini DP, it integrates the PCIe and DisplayPort protocols, supports higher bandwidth (20Gbps), and can achieve more functions (such as data transmission, charging). When using, it is necessary to confirm the type through the interface identifier (Thunderbolt symbol) to avoid confusion.

Summary: Whether the Mini DP interface can reach 144Hz mainly depends on the DP protocol version it follows. DP 1.4 version can stably support 1080p/4K 144Hz, while the DP 1.0 version theoretically supports 1080p 144Hz, but the actual performance may be limited. Users need to confirm the device interface version and resolution requirements to choose the appropriate configuration.